Question

The kinetic energy of an object of
mass, mouing with a velocity
of 5 ms' is 25 J. What will be its
kinetic energy when its velocity
is doubled? What will be its
Kinetic energy when its velocity
is increased three times?
​

Answer 1

Answer:

100 J

Explanation:

When the velocity of a body is doubled its kinetic energy becomes four times.

let

m=1kg

v=5m/s

2v=2x5m/s = 10m/s

$K.E. = \frac{1}{2} mv^{2}$

$=\frac{1}{2} *1*10^{2}$

=100J

Answer 2

Answer:

1. 100J
2. 225J thanks

Explanation:

see image